When the sweet spot is sharp and positioned as you desire, press the Locking Button on the Focusing Collar to lock your Lensbaby 3G into place. Then you can make precise adjustments to your focus by rotating the Barrel Focusing Ring on the end of the Lensbaby 3G, just like a manual focus lens. You can also make precise adjustments to the placement of the sweet spot by rotating the focusing post knobs.

·    Coated optical glass doublet (same optic as Lensbaby 2.0)

·    Focal Length: about 50 mm

·    Focus Type: Manual/Fingertip with 2 additional types of fine focusing

·    Aperture Type: interchangeable levitating aperture disks

·    Apertures: f/2, f/2.8, f/4, f/5.6, f/8, f/11, f/16, f/22

·    Minimum Focus: about 12" (30 cm)

·    Maximum Focus: infinity

·    Size: 3" (7.6 cm) h x 3.25" (9 cm) w

·    Weight: 5.7oz (161.59g)

·    No electronic communication between the lens and the camera body

·    Available in mounts for virtually all digital and film SLR cameras including Canon EF (EOS), Nikon F, Minolta Dynax / Sony Alpha A, Pentax K / Samsung GX, Olympus E1 / Panasonic Lumix DMC, Leica R, Olympus OM, Canon FD, Minolta Manual, Contax/Yashica, and Screw mounts

Automatic light metering is possible by shooting in aperture priority mode for almost all digital and film SLR camera bodies except certain Nikon bodies including the D50, D70, D70S, D80, D100, N50, N55, N65, N70, N75, N80, Kodak 14N and ProN, and Fuji S1, S2, and S3